Page 88 - Vessel Sanitation Program 2018 Operations Manual

VSP 2018 Operations Manual

systems that can be used with chemicals or chemical mix
tanks.
• Water softeners for nonpotable fresh water.
• Water softener and mineralizer drain lines including
backwash drain lines. The only allowable protections for
these lines are an AIR GAP or an RP ASSEMBLY.
• High saline discharge line from evaporators. The only
allowable protections for these lines are an AIR GAP or an
RP ASSEMBLY.
• Chemical tanks.
• Other connections between the POTABLE WATER system
and a nonpotable water system such as the GRAY WATER
system, laundry system, or TECHNICAL WATER system.
The only allowable forms of protection for these
connections are an AIR GAP or an RP ASSEMBLY.
• BLACK WATER or combined GRAY WATER/BLACK
WATER systems. An AIR GAP is the only allowable
protection for these connections.
• Any other connection to the POTABLE WATER system
where CONTAMINATION or BACKFLOW can occur.
• Hi-Fog or similar suppression systems connected to
POTABLE WATER TANKS.

5.7.1.1.4 Log (08)
A CROSS-CONNECTION control program must include, at a
minimum, a complete listing of CROSS-CONNECTIONS and the
BACKFLOW prevention method or device for each so there is a
match to the PLUMBING SYSTEM component and location. AIR
GAPS must be included in the listing.

AIR GAPS on faucet taps do not need to be included on the
CROSS-CONNECTION control program listing.

The program must set a schedule for inspection frequency. Repeat
devices such as toilets may be grouped under a single device
type.

A log documenting the inspection and maintenance in written or
electronic form must be maintained and be available for review
during inspections.

5.7.1.2 Device Installation

5.7.1.2.1 Air Gaps and Backflow Prevention Devices (08)
AIR GAPS should be used where feasible and where water under
pressure is not required.

5.0 Potable Water; 59